The effect of pressure on the phase transitions in MTPP(TCNQ) 2 and MTPA(TCNQ)2 : an ESR study

A. Graja , G. Sekretarczyk , M. Krupski

The ion-radical salt MTPP(TCNQ)2 undergoes a first-order phase transition whereas the isomorphous salt MTPA(TCNQ)2 undergoes only a pressure-induced transition. These phase transitions have a pronounced influence on the ESR spectra. We have observed and discussed the changes in the spectral parameters and those describing the exciton dynamics as a function of pressure and temperature.

Mots clés: high pressure solid state phase transformations; organic compounds; organic semiconductors; paramagnetic resonance

Domaines: Articles anciens

A. Graja, G. Sekretarczyk, M. Krupski. The effect of pressure on the phase transitions in MTPP(TCNQ) 2 and MTPA(TCNQ)2 : an ESR study. Journal de Physique, 1985, 46 (10), pp.1743-1749. ⟨10.1051/jphys:0198500460100174300⟩. ⟨jpa-00210126⟩